/* parse a type - the part at the end after the identifier. eg. array specifications etc. */
struct ValueType *TypeParseBack(struct ParseState *Parser, struct ValueType *FromType)
{
enum LexToken Token;
struct ParseState Before;
ParserCopy(&Before, Parser);
Token = LexGetToken(Parser, NULL, TRUE);
if (Token == TokenLeftSquareBracket){
/* add another array bound */
if (LexGetToken(Parser, NULL, FALSE) == TokenRightSquareBracket){
/* an unsized array */
LexGetToken(Parser, NULL, TRUE);
return TypeGetMatching(Parser->pc, Parser, TypeParseBack(Parser, FromType), TypeArray, 0, Parser->pc->StrEmpty, TRUE);
}else{
/* get a numeric array size */
enum RunMode OldMode = Parser->Mode;
int ArraySize;
Parser->Mode = RunModeRun;
ArraySize = ExpressionParseInt(Parser);
Parser->Mode = OldMode;
if (LexGetToken(Parser, NULL, TRUE) != TokenRightSquareBracket)
ProgramFail(Parser, "']' expected");
return TypeGetMatching(Parser->pc, Parser, TypeParseBack(Parser, FromType), TypeArray, ArraySize, Parser->pc->StrEmpty, TRUE);
}
}else{
/* the type specification has finished */
ParserCopy(Parser, &Before);
return FromType;
}
}
void SRV1SetupFunc()
{
IntArrayType = TypeGetMatching(NULL, &IntType, TypeArray, 16, StrEmpty, TRUE);
VariableDefinePlatformVar(NULL, "scanvect", IntArrayType, (union AnyValue *)&ScanVect, FALSE);
VariableDefinePlatformVar(NULL, "neuron", IntArrayType, (union AnyValue *)&NNVect, FALSE);
VariableDefinePlatformVar(NULL, "blobcnt", &IntType, (union AnyValue *)&Blobcnt, FALSE);
VariableDefinePlatformVar(NULL, "blobx1", &IntType, (union AnyValue *)&Blobx1, FALSE);
VariableDefinePlatformVar(NULL, "blobx2", &IntType, (union AnyValue *)&Blobx2, FALSE);
VariableDefinePlatformVar(NULL, "bloby1", &IntType, (union AnyValue *)&Bloby1, FALSE);
VariableDefinePlatformVar(NULL, "bloby2", &IntType, (union AnyValue *)&Bloby2, FALSE);
VariableDefinePlatformVar(NULL, "lcount", &IntType, (union AnyValue *)&Elcount, FALSE);
VariableDefinePlatformVar(NULL, "rcount", &IntType, (union AnyValue *)&Ercount, FALSE);
VariableDefinePlatformVar(NULL, "y1", &IntType, (union AnyValue *)&Iy1, FALSE);
VariableDefinePlatformVar(NULL, "y2", &IntType, (union AnyValue *)&Iy2, FALSE);
VariableDefinePlatformVar(NULL, "u1", &IntType, (union AnyValue *)&Iu1, FALSE);
VariableDefinePlatformVar(NULL, "u2", &IntType, (union AnyValue *)&Iu2, FALSE);
VariableDefinePlatformVar(NULL, "v1", &IntType, (union AnyValue *)&Iv1, FALSE);
VariableDefinePlatformVar(NULL, "v2", &IntType, (union AnyValue *)&Iv2, FALSE);
VariableDefinePlatformVar(NULL, "gpslat", &IntType, (union AnyValue *)&GPSlat, FALSE);
VariableDefinePlatformVar(NULL, "gpslon", &IntType, (union AnyValue *)&GPSlon, FALSE);
VariableDefinePlatformVar(NULL, "gpsalt", &IntType, (union AnyValue *)&GPSalt, FALSE);
VariableDefinePlatformVar(NULL, "gpsfix", &IntType, (union AnyValue *)&GPSfix, FALSE);
VariableDefinePlatformVar(NULL, "gpssat", &IntType, (union AnyValue *)&GPSsat, FALSE);
VariableDefinePlatformVar(NULL, "gpsutc", &IntType, (union AnyValue *)&GPSutc, FALSE);
}
/* create a system struct which has no user-visible members */
struct ValueType *TypeCreateOpaqueStruct(struct ParseState *Parser, const char *StructName, int Size)
{
struct ValueType *Typ = TypeGetMatching(Parser, &UberType, TypeStruct, 0, StructName, FALSE);
/* create the (empty) table */
Typ->Members = VariableAlloc(Parser, sizeof(struct Table) + STRUCT_TABLE_SIZE * sizeof(struct TableEntry), TRUE);
Typ->Members->HashTable = (struct TableEntry **)((char *)Typ->Members + sizeof(struct Table));
TableInitTable(Typ->Members, (struct TableEntry **)((char *)Typ->Members + sizeof(struct Table)), STRUCT_TABLE_SIZE, TRUE);
Typ->Sizeof = Size;
return Typ;
}
/* parse a type - the part which is repeated with each identifier in a declaration list */
void TypeParseIdentPart(struct ParseState *Parser, struct ValueType *BasicTyp, struct ValueType **Typ, char **Identifier)
{
struct ParseState Before;
enum LexToken Token;
struct Value *LexValue;
int Done = FALSE;
*Typ = BasicTyp;
*Identifier = StrEmpty;
while (!Done)
{
ParserCopy(&Before, Parser);
Token = LexGetToken(Parser, &LexValue, TRUE);
switch (Token)
{
case TokenOpenBracket:
if (*Typ != NULL)
ProgramFail(Parser, "bad type declaration");
TypeParse(Parser, Typ, Identifier, NULL);
if (LexGetToken(Parser, NULL, TRUE) != TokenCloseBracket)
ProgramFail(Parser, "')' expected");
break;
case TokenAsterisk:
if (*Typ == NULL)
ProgramFail(Parser, "bad type declaration");
*Typ = TypeGetMatching(Parser, *Typ, TypePointer, 0, StrEmpty, TRUE);
break;
case TokenIdentifier:
if (*Typ == NULL || *Identifier != StrEmpty)
ProgramFail(Parser, "bad type declaration");
*Identifier = LexValue->Val->Identifier;
Done = TRUE;
break;
default: ParserCopy(Parser, &Before); Done = TRUE; break;
}
}
if (*Typ == NULL)
ProgramFail(Parser, "bad type declaration");
if (*Identifier != StrEmpty)
{
/* parse stuff after the identifier */
*Typ = TypeParseBack(Parser, *Typ);
}
}
/* creates various system-dependent definitions */
void StdioSetupFunc(void)
{
struct LibraryFunction *plib;
plib = &StdioFunctions;
plib[ 0].Func = StdioSprintf ;
plib[ 1].Func = StdioPuts ;
plib[ 2].Func = StdioGets ;
plib[ 3].Func = StdioCls ;
plib[ 4].Func = StdioFopen ;
plib[ 5].Func = StdioFreopen ;
plib[ 6].Func = StdioFclose ;
plib[ 7].Func = StdioFread ;
plib[ 8].Func = StdioFwrite ;
plib[ 9].Func = StdioFgetc ;
plib[10].Func = StdioFgetc ;
plib[11].Func = StdioFgets ;
plib[12].Func = StdioFputc ;
plib[13].Func = StdioFputs ;
plib[14].Func = StdioFeof ;
plib[15].Func = StdioFtell ;
plib[16].Func = StdioFseek ;
plib[17].Func = StdioPrintf ;
struct ValueType *StructFileType;
struct ValueType *FilePtrType;
/* make a "struct __FILEStruct" which is the same size as a native FILE structure */
StructFileType = TypeCreateOpaqueStruct(NULL, TableStrRegister("__FILEStruct"), sizeof(FILE));
/* get a FILE * type */
FilePtrType = TypeGetMatching(NULL, StructFileType, TypePointer, 0, StrEmpty, TRUE);
/* make a "struct __va_listStruct" which is the same size as our struct StdVararg */
TypeCreateOpaqueStruct(NULL, TableStrRegister("__va_listStruct"), sizeof(FILE));
/* define EOF equal to the system EOF */
VariableDefinePlatformVar(NULL, "EOF", &IntType, (union AnyValue *)&EOFValue, FALSE);
VariableDefinePlatformVar(NULL, "SEEK_SET", &IntType, (union AnyValue *)&SEEK_SETValue, FALSE);
VariableDefinePlatformVar(NULL, "SEEK_CUR", &IntType, (union AnyValue *)&SEEK_CURValue, FALSE);
VariableDefinePlatformVar(NULL, "SEEK_END", &IntType, (union AnyValue *)&SEEK_ENDValue, FALSE);
VariableDefinePlatformVar(NULL, "BUFSIZ", &IntType, (union AnyValue *)&BUFSIZValue, FALSE);
VariableDefinePlatformVar(NULL, "FILENAME_MAX", &IntType, (union AnyValue *)&FILENAME_MAXValue, FALSE);
/* define NULL*/
if (!VariableDefined(TableStrRegister("NULL")))
VariableDefinePlatformVar(NULL, "NULL", &IntType, (union AnyValue *)&ZeroValue, FALSE);
}
/* parse an enum declaration */
void TypeParseEnum(struct ParseState *Parser, struct ValueType **Typ){
struct Value *LexValue;
struct Value InitValue;
enum LexToken Token;
int EnumValue = 0;
char *EnumIdentifier;
Picoc *pc = Parser->pc;
Token = LexGetToken(Parser, &LexValue, FALSE);
if (Token == TokenIdentifier){
LexGetToken(Parser, &LexValue, TRUE);
EnumIdentifier = LexValue->Val->Identifier;
Token = LexGetToken(Parser, NULL, FALSE);
}
else{
static char TempNameBuf[7] = "^e0000";
EnumIdentifier = PlatformMakeTempName(pc, TempNameBuf);
}
TypeGetMatching(pc, Parser, &pc->UberType, TypeEnum, 0, EnumIdentifier, Token != TokenLeftBrace);
*Typ = &pc->IntType;
if (Token != TokenLeftBrace){
/* use the already defined enum */
if ((*Typ)->Members == NULL)
ProgramFail(Parser, "enum '%s' isn't defined", EnumIdentifier);
return;
}
if (pc->TopStackFrame != NULL) ProgramFail(Parser, "enum definitions can only be globals");
LexGetToken(Parser, NULL, TRUE);
(*Typ)->Members = &pc->GlobalTable;
memset((void *)&InitValue, '\0', sizeof(struct Value));
InitValue.Typ = &pc->IntType;
InitValue.Val = (union AnyValue *)&EnumValue;
do {
if (LexGetToken(Parser, &LexValue, TRUE) != TokenIdentifier)
ProgramFail(Parser, "identifier expected");
EnumIdentifier = LexValue->Val->Identifier;
if (LexGetToken(Parser, NULL, FALSE) == TokenAssign){
LexGetToken(Parser, NULL, TRUE);
EnumValue = ExpressionParseInt(Parser);
}
VariableDefine(pc, Parser, EnumIdentifier, &InitValue, NULL, FALSE);
Token = LexGetToken(Parser, NULL, TRUE);
if (Token != TokenComma && Token != TokenRightBrace)
ProgramFail(Parser, "comma expected");
EnumValue++;
} while (Token == TokenComma);
}
/**
* creates various system-dependent definitions
*
* We retain values like stdout, stdin and stderr in this
* function to avoid having to invent "FilePtrType" for
* rotables.
*/
void StdioSetupFunc(void)
{
struct ValueType *StructFileType;
struct ValueType *FilePtrType;
/* make a "struct __FILEStruct" which is the same size as a native FILE structure */
StructFileType = TypeCreateOpaqueStruct(NULL, TableStrRegister("__FILEStruct"), sizeof(FILE));
/* get a FILE * type */
FilePtrType = TypeGetMatching(NULL, StructFileType, TypePointer, 0, StrEmpty, TRUE);
/* make a "struct __va_listStruct" which is the same size as our struct StdVararg */
TypeCreateOpaqueStruct(NULL, TableStrRegister("__va_listStruct"), sizeof(FILE));
/* define stdin, stdout and stderr */
VariableDefinePlatformVar(NULL, "stdin", FilePtrType, (union AnyValue *)&stdinValue, FALSE);
VariableDefinePlatformVar(NULL, "stdout", FilePtrType, (union AnyValue *)&stdoutValue, FALSE);
VariableDefinePlatformVar(NULL, "stderr", FilePtrType, (union AnyValue *)&stderrValue, FALSE);
/* define NULL, TRUE and FALSE */
if (!VariableDefined(TableStrRegister("NULL")))
VariableDefinePlatformVar(NULL, "NULL", &IntType, (union AnyValue *)&ZeroValue, FALSE);
}
/* creates various system-dependent definitions */
void StdioSetupFunc(Picoc *pc)
{
struct ValueType *StructFileType;
struct ValueType *FilePtrType;
/* make a "struct __FILEStruct" which is the same size as a native FILE structure */
StructFileType = TypeCreateOpaqueStruct(pc, NULL, TableStrRegister(pc, "__FILEStruct"), sizeof(FILE));
/* get a FILE * type */
FilePtrType = TypeGetMatching(pc, NULL, StructFileType, TypePointer, 0, pc->StrEmpty, TRUE);
/* make a "struct __va_listStruct" which is the same size as our struct StdVararg */
TypeCreateOpaqueStruct(pc, NULL, TableStrRegister(pc, "__va_listStruct"), sizeof(FILE));
/* define EOF equal to the system EOF */
VariableDefinePlatformVar(pc, NULL, "EOF", &pc->IntType, (union AnyValue *)&EOFValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "SEEK_SET", &pc->IntType, (union AnyValue *)&SEEK_SETValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "SEEK_CUR", &pc->IntType, (union AnyValue *)&SEEK_CURValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "SEEK_END", &pc->IntType, (union AnyValue *)&SEEK_ENDValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "BUFSIZ", &pc->IntType, (union AnyValue *)&BUFSIZValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "FILENAME_MAX", &pc->IntType, (union AnyValue *)&FILENAME_MAXValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "_IOFBF", &pc->IntType, (union AnyValue *)&_IOFBFValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "_IOLBF", &pc->IntType, (union AnyValue *)&_IOLBFValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "_IONBF", &pc->IntType, (union AnyValue *)&_IONBFValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "L_tmpnam", &pc->IntType, (union AnyValue *)&L_tmpnamValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "GETS_MAX", &pc->IntType, (union AnyValue *)&GETS_MAXValue, FALSE);
/* define stdin, stdout and stderr */
VariableDefinePlatformVar(pc, NULL, "stdin", FilePtrType, (union AnyValue *)&stdinValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "stdout", FilePtrType, (union AnyValue *)&stdoutValue, FALSE);
VariableDefinePlatformVar(pc, NULL, "stderr", FilePtrType, (union AnyValue *)&stderrValue, FALSE);
/* define NULL, TRUE and FALSE */
if (!VariableDefined(pc, TableStrRegister(pc, "NULL")))
VariableDefinePlatformVar(pc, NULL, "NULL", &pc->IntType, (union AnyValue *)&Stdio_ZeroValue, FALSE);
}
/* parse an array initialiser and assign to a variable */
int ParseArrayInitialiser(struct ParseState *Parser, struct Value *NewVariable, int DoAssignment)
{
int ArrayIndex = 0;
enum LexToken Token;
struct Value *CValue;
/* count the number of elements in the array */
if (DoAssignment && Parser->Mode == RunModeRun)
{
struct ParseState CountParser;
int NumElements;
ParserCopy(&CountParser, Parser);
NumElements = ParseArrayInitialiser(&CountParser, NewVariable, FALSE);
if (NewVariable->Typ->Base != TypeArray)
AssignFail(Parser, "%t from array initializer", NewVariable->Typ, NULL, 0, 0, NULL, 0);
if (NewVariable->Typ->ArraySize == 0)
{
NewVariable->Typ = TypeGetMatching(Parser->pc, Parser, NewVariable->Typ->FromType, NewVariable->Typ->Base, NumElements, NewVariable->Typ->Identifier, TRUE);
VariableRealloc(Parser, NewVariable, TypeSizeValue(NewVariable, FALSE));
}
#ifdef DEBUG_ARRAY_INITIALIZER
PRINT_SOURCE_POS;
printf("array size: %d \n", NewVariable->Typ->ArraySize);
#endif
}
/* parse the array initialiser */
Token = LexGetToken(Parser, NULL, FALSE);
while (Token != TokenRightBrace)
{
if (LexGetToken(Parser, NULL, FALSE) == TokenLeftBrace)
{
/* this is a sub-array initialiser */
int SubArraySize = 0;
struct Value *SubArray = NewVariable;
if (Parser->Mode == RunModeRun && DoAssignment)
{
SubArraySize = TypeSize(NewVariable->Typ->FromType, NewVariable->Typ->FromType->ArraySize, TRUE);
SubArray = VariableAllocValueFromExistingData(Parser, NewVariable->Typ->FromType, (union AnyValue *)(&NewVariable->Val->ArrayMem[0] + SubArraySize * ArrayIndex), TRUE, NewVariable);
#ifdef DEBUG_ARRAY_INITIALIZER
int FullArraySize = TypeSize(NewVariable->Typ, NewVariable->Typ->ArraySize, TRUE);
PRINT_SOURCE_POS;
PRINT_TYPE(NewVariable->Typ)
printf("[%d] subarray size: %d (full: %d,%d) \n", ArrayIndex, SubArraySize, FullArraySize, NewVariable->Typ->ArraySize);
#endif
if (ArrayIndex >= NewVariable->Typ->ArraySize)
ProgramFail(Parser, "too many array elements");
}
LexGetToken(Parser, NULL, TRUE);
ParseArrayInitialiser(Parser, SubArray, DoAssignment);
}
else
{
struct Value *ArrayElement = NULL;
if (Parser->Mode == RunModeRun && DoAssignment)
{
struct ValueType * ElementType = NewVariable->Typ;
int TotalSize = 1;
int ElementSize = 0;
/* int x[3][3] = {1,2,3,4} => handle it just like int x[9] = {1,2,3,4} */
while (ElementType->Base == TypeArray)
{
TotalSize *= ElementType->ArraySize;
ElementType = ElementType->FromType;
/* char x[10][10] = {"abc", "def"} => assign "abc" to x[0], "def" to x[1] etc */
if (LexGetToken(Parser, NULL, FALSE) == TokenStringConstant && ElementType->FromType->Base == TypeChar)
break;
}
ElementSize = TypeSize(ElementType, ElementType->ArraySize, TRUE);
#ifdef DEBUG_ARRAY_INITIALIZER
PRINT_SOURCE_POS;
printf("[%d/%d] element size: %d (x%d) \n", ArrayIndex, TotalSize, ElementSize, ElementType->ArraySize);
#endif
if (ArrayIndex >= TotalSize)
ProgramFail(Parser, "too many array elements");
ArrayElement = VariableAllocValueFromExistingData(Parser, ElementType, (union AnyValue *)(&NewVariable->Val->ArrayMem[0] + ElementSize * ArrayIndex), TRUE, NewVariable);
}
/* this is a normal expression initialiser */
if (!ExpressionParse(Parser, &CValue))
ProgramFail(Parser, "expression expected");
if (Parser->Mode == RunModeRun && DoAssignment)
{
ExpressionAssign(Parser, ArrayElement, CValue, FALSE, NULL, 0, FALSE);
VariableStackPop(Parser, CValue);
VariableStackPop(Parser, ArrayElement);
}
}
ArrayIndex++;
Token = LexGetToken(Parser, NULL, FALSE);
if (Token == TokenComma)
{
LexGetToken(Parser, NULL, TRUE);
Token = LexGetToken(Parser, NULL, FALSE);
}
else if (Token != TokenRightBrace)
ProgramFail(Parser, "comma expected");
}
if (Token == TokenRightBrace)
LexGetToken(Parser, NULL, TRUE);
else
ProgramFail(Parser, "'}' expected");
return ArrayIndex;
}
/* parse a struct or union declaration */
void TypeParseStruct(struct ParseState *Parser, struct ValueType **Typ, int IsStruct)
{
struct Value *LexValue;
struct ValueType *MemberType;
char *MemberIdentifier;
char *StructIdentifier;
struct Value *MemberValue;
enum LexToken Token;
int AlignBoundary;
Token = LexGetToken(Parser, &LexValue, FALSE);
if (Token == TokenIdentifier)
{
LexGetToken(Parser, &LexValue, TRUE);
StructIdentifier = LexValue->Val->Identifier;
Token = LexGetToken(Parser, NULL, FALSE);
}
else
{
static char TempNameBuf[7] = "^s0000";
StructIdentifier = PlatformMakeTempName(TempNameBuf);
}
*Typ = TypeGetMatching(Parser, &UberType, IsStruct ? TypeStruct : TypeUnion, 0, StructIdentifier, Token != TokenLeftBrace);
Token = LexGetToken(Parser, NULL, FALSE);
if (Token != TokenLeftBrace)
{
/* use the already defined structure */
if ((*Typ)->Members == NULL)
ProgramFail(Parser, "la estructura '%s' no esta definida en este ambito", LexValue->Val->Identifier);
return;
}
if (TopStackFrame != NULL)
ProgramFail(Parser, "las estructuras/uniones solo pueden definirse en un ambito global");
LexGetToken(Parser, NULL, TRUE);
(*Typ)->Members = VariableAlloc(Parser, sizeof(struct Table) + STRUCT_TABLE_SIZE * sizeof(struct TableEntry), TRUE);
(*Typ)->Members->HashTable = (struct TableEntry **)((char *)(*Typ)->Members + sizeof(struct Table));
TableInitTable((*Typ)->Members, (struct TableEntry **)((char *)(*Typ)->Members + sizeof(struct Table)), STRUCT_TABLE_SIZE, TRUE);
do {
TypeParse(Parser, &MemberType, &MemberIdentifier, NULL);
if (MemberType == NULL || MemberIdentifier == NULL)
ProgramFail(Parser, "tipo invalido en estructura");
MemberValue = VariableAllocValueAndData(Parser, sizeof(int), FALSE, NULL, TRUE);
MemberValue->Typ = MemberType;
if (IsStruct)
{
/* allocate this member's location in the struct */
AlignBoundary = MemberValue->Typ->AlignBytes;
if (((*Typ)->Sizeof & (AlignBoundary-1)) != 0)
(*Typ)->Sizeof += AlignBoundary - ((*Typ)->Sizeof & (AlignBoundary-1));
MemberValue->Val->Integer = (*Typ)->Sizeof;
(*Typ)->Sizeof += TypeSizeValue(MemberValue, TRUE);
}
else
{
/* union members always start at 0, make sure it's big enough to hold the largest member */
MemberValue->Val->Integer = 0;
if (MemberValue->Typ->Sizeof > (*Typ)->Sizeof)
(*Typ)->Sizeof = TypeSizeValue(MemberValue, TRUE);
}
/* make sure to align to the size of the largest member's alignment */
if ((*Typ)->AlignBytes < MemberValue->Typ->AlignBytes)
(*Typ)->AlignBytes = MemberValue->Typ->AlignBytes;
/* define it */
if (!TableSet((*Typ)->Members, MemberIdentifier, MemberValue, Parser->FileName, Parser->Line, Parser->CharacterPos))
ProgramFail(Parser, "el miembro '%s' ya esta definido", &MemberIdentifier);
if (LexGetToken(Parser, NULL, TRUE) != TokenSemicolon)
ProgramFail(Parser, "se esperaba un punto y coma");
} while (LexGetToken(Parser, NULL, FALSE) != TokenRightBrace);
/* now align the structure to the size of its largest member's alignment */
AlignBoundary = (*Typ)->AlignBytes;
if (((*Typ)->Sizeof & (AlignBoundary-1)) != 0)
(*Typ)->Sizeof += AlignBoundary - ((*Typ)->Sizeof & (AlignBoundary-1));
LexGetToken(Parser, NULL, TRUE);
}
/* parse a struct or union declaration */
void TypeParseStruct(struct ParseState *Parser, struct ValueType **Typ, int IsStruct){
struct Value *LexValue;
struct ValueType *MemberType;
char *MemberIdentifier;
char *StructIdentifier;
struct Value *MemberValue;
enum LexToken Token;
int AlignBoundary;
Picoc *pc = Parser->pc;
Token = LexGetToken(Parser, &LexValue, FALSE);
if (Token == TokenIdentifier){
LexGetToken(Parser, &LexValue, TRUE);
StructIdentifier = LexValue->Val->Identifier;
Token = LexGetToken(Parser, NULL, FALSE);
}else{
static char TempNameBuf[7] = "^s0000";
StructIdentifier = PlatformMakeTempName(pc, TempNameBuf);
}
*Typ = TypeGetMatching(pc, Parser, &Parser->pc->UberType, IsStruct ? TypeStruct : TypeUnion, 0, StructIdentifier, TRUE);
if (Token == TokenLeftBrace && (*Typ)->Members)
ProgramFail(Parser, "data type '%t' is already defined", *Typ);
Token = LexGetToken(Parser, NULL, FALSE);
if (Token != TokenLeftBrace){
/* use the already defined structure */
#if 0
if ((*Typ)->Members == NULL)
ProgramFail(Parser, "structure '%s' isn't defined", LexValue->Val->Identifier);
#endif
return;
}
if (pc->TopStackFrame != NULL) ProgramFail(Parser, "struct/union definitions can only be globals");
LexGetToken(Parser, NULL, TRUE);
(*Typ)->Members = VariableAlloc(pc, Parser, sizeof(struct Table) + STRUCT_TABLE_SIZE * sizeof(struct TableEntry), TRUE);
(*Typ)->Members->HashTable = (struct TableEntry **)((char *)(*Typ)->Members + sizeof(struct Table));
TableInitTable((*Typ)->Members, (struct TableEntry **)((char *)(*Typ)->Members + sizeof(struct Table)), STRUCT_TABLE_SIZE, TRUE);
do {
TypeParse(Parser, &MemberType, &MemberIdentifier, NULL);
if (!MemberType || !MemberIdentifier)
ProgramFail(Parser, "invalid type in struct");
MemberValue = VariableAllocValueAndData(pc, Parser, sizeof(int), FALSE, NULL, TRUE);
MemberValue->Typ = MemberType;
if (IsStruct){
/* allocate this member's location in the struct */
AlignBoundary = MemberValue->Typ->AlignBytes;
if (((*Typ)->Sizeof & (AlignBoundary-1)) != 0)
(*Typ)->Sizeof += AlignBoundary - ((*Typ)->Sizeof & (AlignBoundary-1));
MemberValue->Val->Integer = (*Typ)->Sizeof;
(*Typ)->Sizeof += TypeSizeValue(MemberValue, TRUE);
}else{
/* union members always start at 0, make sure it's big enough to hold the largest member */
MemberValue->Val->Integer = 0;
if ((*Typ)->Sizeof < MemberValue->Typ->Sizeof )
(*Typ)->Sizeof = TypeSizeValue(MemberValue, TRUE);
}
/* make sure to align to the size of the largest member's alignment */
if ((*Typ)->AlignBytes < MemberValue->Typ->AlignBytes)
(*Typ)->AlignBytes = MemberValue->Typ->AlignBytes;
/* define it */
if (!TableSet(pc, (*Typ)->Members, MemberIdentifier, MemberValue, Parser->FileName, Parser->Line, Parser->CharacterPos))
ProgramFail(Parser, "member '%s' already defined", &MemberIdentifier);
if (LexGetToken(Parser, NULL, TRUE) != TokenSemicolon)
ProgramFail(Parser, "semicolon expected");
} while (LexGetToken(Parser, NULL, FALSE) != TokenRightBrace);
/* now align the structure to the size of its largest member's alignment */
AlignBoundary = (*Typ)->AlignBytes;
if (((*Typ)->Sizeof & (AlignBoundary-1)) != 0)
(*Typ)->Sizeof += AlignBoundary-((*Typ)->Sizeof & (AlignBoundary-1));
LexGetToken(Parser, NULL, TRUE);
}